Clean deep-set lug nuts and brake calipers.
Use a water-based wheel cleaner for the best results.

The Clean Wheel Lug Nut
Brush goes where other brushes can’t! The 1 inch brush easily fit in lug nut
holes to thoroughly clean them. The naturally feathered boar’s hair bristles
will not scratch any wheel finish. Rather than buying nylon made to look
like boar’s hair, you can get the real thing! Boar’s hair is durable yet
very gentle on any surface. Use the Clean Wheel Brush on painted, alloy,
chrome, plated, and anodized wheels. The Clean Wheel Lug Nut Brush is safe
on any wheel!

The boar’s hair
bristles are also able to withstand wheel cleaners. Let’s talk about wheel
cleaners for a moment. If you’re going to use a safe, natural wheel brush,
you should be using a water-based, non-caustic wheel cleaner, like Wolfgang Tire & Wheel Cleaner. These cleaners
are safe on all wheels and they make your job much easier by releasing baked
on brake dust and grime.

The Clean Wheel Lug Nut
Brush has a 8 ½ long finished wooden handle. The wood is sealed to
protect it from wheel cleaners and water. The band around the bristles
is plastic, rather than metal, to prevent scratching. The handle is longer
than similar brushes to give you greater access to the deep recesses of the
wheels.

The Clean Wheel Lug Nut
Brush is an absolute necessity if you drive (or detail) a vehicle that produces
a lot of brake dust, or a vehicle with decorative brake calipers, as is the case
on a lot of sports cars. If your wheels are made to be seen, then they’re
made to be cleaned! Get the 1 inch Clean Wheel Brush and show off your
clean, mean wheels.

Another innovative use for the Clean Wheel Lug Nut Brush is cleaning around the gas cap and gas tank door. Thanks for forum member cnfowler for the photos.